Abstract

The sets of vertical ionization potentials for molecules of hydrogen (deuterium) desorbed from metal hydrides as well as for thermodynamically equilibrated molecular hydrogen (deuterium) at room temperature were obtained by means of the ionization efficiency curves method using mass-spectrometry measurements. Some sets of term differences are explained by thermoemission vibrational excitation of molecules. Comparative analysis to the data previously obtained is given. It was established that the anomalies of electrical transfer observed in the gas phase of metal-hydride-hydrogen systems are caused by vibrational excitation of H 2-molecules, generated during recombination of H-atoms on the metal hydride sorbent surface.

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